Abstract: A multi-speed, power-driven tool may include a transmission mechanism that transmits power from a motor to an output device. A speed selection mechanism may be coupled to the transmission mechanism, to control a speed reduction through the transmission mechanism, and an output speed of the tool. The transmission mechanism may employ a compound, stepped, planetary gear assembly, to provide for an axially compact arrangement of transmission mechanism components, to reduce an axial length of the tool. The speed selection mechanism may employ a multi-staged grounding device, corresponding to the reduced axial length of the transmission mechanism.

Abstract: A method may include generating, via radiation, an image representing an object; determining physical properties of the object; and associating determined physical properties of the object with one or more of: the image generated by the X-ray scanner system, a segmented image from the image generated by the X-ray scanner system, or a passenger identifier.

Abstract: An electronic unit for a vehicle, comprising surface elements arranged next to one another with a visible surface side and a surface underside is disclosed. The surface elements are fixed in a housing. The housing has a top side facing the surface underside and an underside, wherein a carrier plate is provided. Each housing on its underside has at least one protruding fixing element for fixing the surface elements to the carrier plate. The carrier plate connects the surface elements together, wherein each fixing element has an index element arranged on the fixing element between the carrier plate and the underside and is releasably connected to the fixing element. The index elements are connected to the carrier plate by substance bonding so each surface element is releasably fixed to the carrier plate, and wherein by the index elements, the surface elements are arranged relative to and level with one another.

Abstract: Microphones including a housing defining a cavity, a plurality of conductors positioned within the cavity, at least one dielectric bar positioned within the cavity, and a transducer diaphragm. The conductors are structured to move in response to pressure changes while the housing remains fixed. A first conductor generates first electrical signals responsive to the pressure changes resulting from changes in an atmospheric pressure. A second conductor generates second electrical signals responsive to the pressure changes resulting from acoustic activity. The dielectric bar is fixed with respect to the cavity and remains fixed under the pressure changes. The dielectric bar is adjacent to at least one of the conductors. In response to an applied pressure that is an atmospheric pressure and/or an acoustic pressure, the transducer diaphragm exerts a force on the housing and displaces at least a portion of conductors with respect to the dielectric bar.

Abstract: Among other things, one or more systems and/or techniques for visually augmenting regions within images are provided herein. An image of an object, such as a bag, is segmented to identify an item (e.g., a metal gun barrel). Features of the item are extracted from voxels representing the item within the image (e.g., voxels within a first region), such as a size, shape, density, and orientation of the item. Response to the features of the item matching predefined features of a target item to detect, one or more additional regions are identified, such as a second region proximate to the first region based upon a location of the second region corresponding to where a connected part of the item (e.g., a plastic handle of the gun) is predicted to be located. The one or more regions are visually distinguished within the image from other regions (e.g., colored, highlighted, etc.).

Abstract: Among other things, one or more systems and/or techniques for classifying an item disposed within an object are provided herein. A three-dimensional image of the object (e.g., a bag) is segmented into a set of item representations (e.g., laptop, thermos, etc.). An item is identified from the set of item representations based upon item features of the item, such as the laptop that could be used to conceal an item of interest such as an explosive. A region comprising a three-dimensional image of the item is divided into a set of sub-regions (e.g., a first sub-region encompassing a screen, a second sub-region encompassing a motherboard, etc.). The item is classified as a potential first type of item (e.g., an explosive laptop) when any sub-region has a number of voxels, with computed tomography (CT) values within a range of known CT values for a first type of item, exceeding a threshold.

Abstract: Among other things, one or more systems and/or techniques for visually augmenting regions within images are provided herein. An image of an object, such as a bag, is segmented to identify an item (e.g., a metal gun barrel). Features of the item are extracted from voxels representing the item within the image (e.g., voxels within a first region), such as a size, shape, density, and orientation of the item. Response to the features of the item matching predefined features of a target item to detect, one or more additional regions are identified, such as a second region proximate to the first region based upon a location of the second region corresponding to where a connected part of the item (e.g., a plastic handle of the gun) is predicted to be located. The one or more regions are visually distinguished within the image from other regions (e.g., colored, highlighted, etc.).

Abstract: A detector array is provided for detecting radiation photons. The detector array includes a phosphor screen that converts radiation photons into light energy. The detector array includes a photodiode array having a plurality of photodiodes that convert the light energy into electrical charge. A first photodiode of the plurality of photodiodes is spaced apart from a second photodiode of the plurality of photodiodes to define a non-detection region. The phosphor screen overlies the first photodiode, the second photodiode, and the non-detection region between the first photodiode and the second photodiode.

Abstract: Microphones including a housing defining a cavity, a plurality of conductors positioned within the cavity, at least one dielectric bar positioned within the cavity, and a transducer diaphragm. The conductors are structured to move in response to pressure changes while the housing remains fixed. A first conductor generates first electrical signals responsive to the pressure changes resulting from changes in an atmospheric pressure. A second conductor generates second electrical signals responsive to the pressure changes resulting from acoustic activity. The dielectric bar is fixed with respect to the cavity and remains fixed under the pressure changes. The dielectric bar is adjacent to at least one of the conductors. In response to an applied pressure that is an atmospheric pressure and/or an acoustic pressure, the transducer diaphragm exerts a force on the housing and displaces at least a portion of conductors with respect to the dielectric bar.

Abstract: Among other things, one or more systems and/or techniques for visually augmenting regions within images are provided herein. An image of an object, such as a bag, is segmented to identify an item (e.g., a metal gun barrel). Features of the item are extracted from voxels representing the item within the image (e.g., voxels within a first region), such as a size, shape, density, and orientation of the item. Response to the features of the item matching predefined features of a target item to detect, one or more additional regions are identified, such as a second region proximate to the first region based upon a location of the second region corresponding to where a connected part of the item (e.g., a plastic handle of the gun) is predicted to be located. The one or more regions are visually distinguished within the image from other regions (e.g., colored, highlighted, etc.).

Abstract: A detector array (118) for a radiation system includes first and second detector cells (202, 250). The first detector cell (202) includes a first scintillator (220) that converts a radiation photon (226) impinging the first scintillator (220) into first light energy (230), and a first solar cell (212) that converts the first light energy (230) into first electrical energy. The second detector cell (250) includes a second scintillator (270) that converts a radiation photon (276) impinging the second scintillator (270) into second light energy (280). The first scintillator (220) includes a first detection surface (224) through which the radiation photon (226) impinging the first scintillator (220) enters the first scintillator (220). The second scintillator (270) includes a second detection surface (274) through which the radiation photon (276) impinging the second scintillator (270) enters the second scintillator (270).

Abstract: A diffraction system configured to generate a diffraction signature based upon an angular disbursement of radiation is provided. In some embodiments, the diffraction system comprises a radiation source comprising a radiographic isotope configured to natural emit radiation due to decay. In some embodiment, the diffraction system is part of an object identification system that comprises one or more other radiation imaging modalities, such as a CT system and/or a line-scan system. By way of example, the one or more other radiation imaging modalities may perform an initial examination of an object to generate data indicative of the object. The data can be analyzed to identify an item of interest within the object, which can subsequently be examined by the diffraction system to generate a diffraction signature of the item. The diffraction signature of the item can be compared to known diffraction signatures of known items to characterize the item.

Abstract: Among other things, one or more systems and/or techniques for classifying an item disposed within an object are provided herein. A three-dimensional image of the object (e.g., a bag) is segmented into a set of item representations (e.g., laptop, thermos, etc.). An item is identified from the set of item representations based upon item features of the item, such as the laptop that could be used to conceal an item of interest such as an explosive. A region comprising a three-dimensional image of the item is divided into a set of sub-regions (e.g., a first sub-region encompassing a screen, a second sub-region encompassing a motherboard, etc.). The item is classified as a potential first type of item (e.g., an explosive laptop) when any sub-region has a number of voxels, with computed tomography (CT) values within a range of known CT values for a first type of item, exceeding a threshold.

Abstract: Among other things, one or more systems and/or techniques for visually augmenting regions within images are provided herein. An image of an object, such as a bag, is segmented to identify an item (e.g., a metal gun barrel). Features of the item are extracted from voxels representing the item within the image (e.g., voxels within a first region), such as a size, shape, density, and orientation of the item. Response to the features of the item matching predefined features of a target item to detect, one or more additional regions are identified, such as a second region proximate to the first region based upon a location of the second region corresponding to where a connected part of the item (e.g., a plastic handle of the gun) is predicted to be located. The one or more regions are visually distinguished within the image from other regions (e.g., colored, highlighted, etc.).

Abstract: A diffraction system configured to generate a diffraction signature based upon an angular disbursement of radiation is provided. In some embodiments, the diffraction system comprises a radiation source comprising a radiographic isotope configured to natural emit radiation due to decay. In some embodiment, the diffraction system is part of an object identification system that comprises one or more other radiation imaging modalities, such as a CT system and/or a line-scan system. By way of example, the one or more other radiation imaging modalities may perform an initial examination of an object to generate data indicative of the object. The data can be analyzed to identify an item of interest within the object, which can subsequently be examined by the diffraction system to generate a diffraction signature of the item. The diffraction signature of the item can be compared to known diffraction signatures of know items to characterize the item.

Abstract: A detector array is provided for detecting radiation photons. The detector array includes a phosphor screen that converts radiation photons into light energy. The detector array includes a photodiode array having a plurality of photodiodes that convert the light energy into electrical charge. A first photodiode of the plurality of photodiodes is spaced apart from a second photodiode of the plurality of photodiodes to define a non-detection region. The phosphor screen overlies the first photodiode, the second photodiode, and the non-detection region between the first photodiode and the second photodiode.

Abstract: A detector array (118) for a radiation system includes first and second detector cells (202, 250). The first detector cell (202) includes a first scintillator (220) that converts a radiation photon (226) impinging the first scintillator (220) into first light energy (230), and a first solar cell (212) that converts the first light energy (230) into first electrical energy. The second detector cell (250) includes a second scintillator (270) that converts a radiation photon (276) impinging the second scintillator (270) into second light energy (280). The first scintillator (220) includes a first detection surface (224) through which the radiation photon (226) impinging the first scintillator (220) enters the first scintillator (220). The second scintillator (270) includes a second detection surface (274) through which the radiation photon (276) impinging the second scintillator (270) enters the second scintillator (270).

Abstract: Among other things, radiation systems and techniques for generating volumetric data and projections images of an object(s) under examination are provided. The radiation system comprises at least two detector arrays and at least one radiation source. During an examination, the radiation source and at least one detector array are rotated about the object while a second detector array is substantially fixed in place. In one embodiment, the radiation source is configured to, at times, illuminate the first detector array and, at times, illuminate the second detector array. For example, the radiation source may illuminate the first detector array during nearly all of the rotation while the second detector array is merely illuminated at a single gantry rotation angle. Information generated by the second detector array may be utilized to yield volumetric data while information generated by the first detector array may be utilized to yield a projection image, for example.

Abstract: A diffraction system configured to generate a diffraction signature based upon an angular disbursement of radiation is provided. In some embodiments, the diffraction system comprises a radiation source comprising a radiographic isotope configured to natural emit radiation due to decay. In some embodiment, the diffraction system is part of an object identification system that comprises one or more other radiation imaging modalities, such as a CT system and/or a line-scan system. By way of example, the one or more other radiation imaging modalities may perform an initial examination of an object to generate data indicative of the object. The data can be analyzed to identify an item of interest within the object, which can subsequently be examined by the diffraction system to generate a diffraction signature of the item. The diffraction signature of the item can be compared to known diffraction signatures of know items to characterize the item.

Abstract: Among other things, an object scanner, such as an x-ray system, is provided, where the object scanner is configured to translate an object undergoing an examination along a non-linear path. For example, in some embodiments, an examination region of the object scanner is spatially offset, relative to an entry port and/or an exit port of the object scanner, such that there is little to no line of sight through the object scanner, from the entry port to the exit port. The non-linearity of the path is configured to reduce the possibility of radiation scatted by an object and/or by portions of the object scanner from escaping the examination region and exiting the object scanner via the entry port and/or the exit port.